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Trying to get this working, building from of this schematic.
My circuits:
Concern: - I'm not exactly sure how the polarity works on their NO push button's I'm using. Its hard to make out in the picture but the left side of the button is labelled 4, while the right is labelled 1. The under...
Ok did this ... Green LED flashes fast and red LED stays on. The green LED has been turning on this whole time alsoa long with the red. I didnt notice at first because its extremely dimmed. Maybe I need the 12 volts?
So I hooked up the circuit based off of this schematic.
When I apply power the red LED comes on right way and stays on. I'm having a hard time finding the issue, anybody see the problem?
My circuit:
More pics available upon request
Ok so I understand how to adjust the frequency of my LED and to calculate the duty cycle with a few easy calculations to find the necessary caps / resistors. Heres what I'm wondering:
With a 555, am I able to adjust the frequency and duty cycle (sorry if wording isn't ideal please bear with me)...
Calculating Frequency Of Blinking LED
So I have a completed 555 circuit with an LED blinking at 2.5Hz (I believe) with a 1 micro farad capacitor, 1 470k resistor and a 1k resistor. My question is: How would I go about calculating which caps or resistors to use to control the frequency at which...
I found a 1mF electrolytic cap and switched it in. When I apply power the light doesnt turn on. I tried switching resistance but still nothing.
Also when I remove the ground lead from Pin 1, the light comes on and stays on. Does this mean anything?
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